ADDED   tcl/patches/8.6.0/tcl-8.6.0-bug3613567-1tmpdirfix.diff
Index: tcl/patches/8.6.0/tcl-8.6.0-bug3613567-1tmpdirfix.diff
==================================================================
--- /dev/null
+++ tcl/patches/8.6.0/tcl-8.6.0-bug3613567-1tmpdirfix.diff
@@ -0,0 +1,19 @@
+diff -uNr tcl8.6.0.orig/unix/tclUnixFCmd.c tcl8.6.0-bug3613567-1tmpdirfix/unix/tclUnixFCmd.c
+--- tcl8.6.0.orig/unix/tclUnixFCmd.c	2012-11-14 11:19:08.000000000 -0600
++++ tcl8.6.0-bug3613567-1tmpdirfix/unix/tclUnixFCmd.c	2013-05-18 13:34:13.591452500 -0500
+@@ -2226,13 +2226,13 @@
+ 
+     dir = getenv("TMPDIR");
+     if (dir && dir[0] && stat(dir, &buf) == 0 && S_ISDIR(buf.st_mode)
+-	    && access(dir, W_OK)) {
++	    && access(dir, W_OK) == 0) {
+ 	return dir;
+     }
+ 
+ #ifdef P_tmpdir
+     dir = P_tmpdir;
+-    if (stat(dir, &buf) == 0 && S_ISDIR(buf.st_mode) && access(dir, W_OK)) {
++    if (stat(dir, &buf) == 0 && S_ISDIR(buf.st_mode) && access(dir, W_OK) == 0) {
+ 	return dir;
+     }
+ #endif

ADDED   tcl/patches/8.6.0/tcl-8.6.0-bug3613569-1segfaultonnotmp.diff
Index: tcl/patches/8.6.0/tcl-8.6.0-bug3613569-1segfaultonnotmp.diff
==================================================================
--- /dev/null
+++ tcl/patches/8.6.0/tcl-8.6.0-bug3613569-1segfaultonnotmp.diff
@@ -0,0 +1,21 @@
+diff -uNr tcl8.6.0.orig/generic/tclIOUtil.c tcl8.6.0-1segfaultonnotmp/generic/tclIOUtil.c
+--- tcl8.6.0.orig/generic/tclIOUtil.c	2012-10-25 06:43:59.000000000 -0500
++++ tcl8.6.0-1segfaultonnotmp/generic/tclIOUtil.c	2013-05-18 13:23:32.370452500 -0500
+@@ -3228,9 +3228,15 @@
+      */
+ 
+     copyToPtr = TclpTempFileNameForLibrary(interp, pathPtr);
+-    Tcl_IncrRefCount(copyToPtr);
+ 
+-    copyFsPtr = Tcl_FSGetFileSystemForPath(copyToPtr);
++    if (copyToPtr != NULL) {
++        Tcl_IncrRefCount(copyToPtr);
++
++        copyFsPtr = Tcl_FSGetFileSystemForPath(copyToPtr);
++    } else {
++        copyFsPtr = NULL;
++    }
++
+     if ((copyFsPtr == NULL) || (copyFsPtr == fsPtr)) {
+ 	/*
+ 	 * We already know we can't use Tcl_FSLoadFile from this filesystem,